Mechanical movement for adjusting the jaws of wrenches, clamps, vises, and similar tools.



A. O. TUTTLE. MECHANICAL MOVBMBN T FOR ADJUSTING THE JAWS OP WRENGHES, CLAMPS, VISES, AND SIMILAR TOOLS. APPLIOATIQN FILED DEC. 29, 1911.

1,037,087. Patented Aug. 27, 1912.

' ITNESSES: v INVENTOR Mia/M UNITED STATES PATENT OFFICE.

AMI CLAUDE TUT'ILE, OF LAKEWOOD, OHIO.

MECHANICAL MOVEMENT FOR ADJUSTING THE JAWS OF WRENCHES, CLAMPS, VISES, AND SIMILAR TOOLS.

Specification of Letters Patent. A

Application filed December 29, 1911.

Patented Aug. 2'7, 1912.

Serial No. 668,580.

To all whom it may concern:

Be it known that I, AM]: CLAUDE TUTTLE, a citizen of the United States, residing at Lakewood, county of Cuyahoga and State of Ohio, have invented a new and useful Mechanical Movement for ,Adjusting the Jaws of Wrenches, Clamps, Vises, and Similar Tools, of which the following is a desoription.

My invention is an improvement in the mechanical movements for adjusting two movable parallel jaws supported within a head, by means of a sliding rod moving longitudinally between the jaws through a central space in the head, the rod having bosses at the end on opposite sides which fit and move in diagonal grooves the inner surfaces of the jaws.

The object of my invention is to provide a means of rapid adjustment for the jaws of wrenches, clamps, Vises and similar tools, which adjustment can be made at any desired distance from the jaws, and to reduce the tool to the smallest size consistent with the size of the opening of the jaws to be obtained. I accomplish these results by means of the mechanism illustrated in the accompanying drawing, in which- Figure 1. is a side View, Fig. 2. a sectional view taken on the line 1,2, in Fig. 1.. showing the position of the jaws and sliding rod when opened, Fig. 3. is an end view of the same and Fig. 4:. a detail perspective'view of a jaw and a portion of the sliding rod.

At the forward part of the head of the tool, (13,) are two transverse openings (a) Fig. 1. which admit the back part of the jaws (A). These openings are divided by a wall (6) Fig. 1, and Fig. 3, which wall is divided for almost its entire length by alongitudinal space (d) Figs. 1,-3,in which the sliding rod (G) fits and moves; this longitudinal space (d) extending through the center of the head (B) to the back end. Each transverse opening (a) Fig. 1. extends forward through the front end of the head a little less than one-half the width across the end, one opening extending through from one side, the other from the opposite side as shown at (0, 0,) Fig. 3.

The back part of the jaws (A. A.) is

thinner than the forward part, but much wider, the width being sufiicient to give the desired amount of opening to the jaws, and when the jaws are opened to their full capacity to allow them to extend into the head far enough to form a lap over the central space occupied by the sliding rod. 'l'his back part of the jaws is long enough to give the proper slant to the diagonal grooves (e, 0,) in the surfaces to allow the sliding rod ((3,) to move readily. The diagonal grooves (e, 6,) in the surfaces of the back part of the jaws admit the bosses (f, f,) on the end of the sliding rod C, the direction of these grooves being such that when the jaws are closed they slant from the center of the head at the back forward and outward, this direction allowing the jaws to open when the sliding rod is moved forward and to close when the rod is drawn backward. The back end of the sliding rod is threaded to accommodate a thumb nut for the purpose of keeping the rod from sliding forward when the jaws are adjusted to any desired position. The sliding rod moves longitudinally through the central space (65,) Fig. 1,3, of the head and the jaws move simultaneously at right angles to the movement of the rod, and when opened can be adjusted and tightened upon an object by drawing the sliding rod back and turning the thumb nut on the back end of the rod tight against the back end of the head.

There are two stops 9, g, Fig. 1, screwed in from opposite sides of the head and in the path of the bosses to prevent the rod C from being drawn farther back than just enough to close the jaws.

I have been unable to find the same movement used for a similar purpose, and I therefore claim:

In a mechanical movement for adjusting the aws of wrenches clamps Vises and similar tools a combination of a head having two transverse openings with parallel sides and ends, each opening extending forward through the front end a little less than one half the width across the end, one opening from one side the other opening from the opposite side, to accommodate the jaws, also a longitudinal space through the center of the head for a sliding rod; two movable verse openings and in the path of the bosses, jaws with diagonal grooves in the inner all substantially as set forth and for the surfaces at the back; a sliding rod with purposes specified.

bosses at the forward end on opposite sides A. CLAUDE TUTTLE. 5 and a thumb nut or locking device at the Witnesses:

back end, and two stops screwed in from KARL C. SOHUELE,

opposite sides of the head back of the trans- FRANK L. TI-IURBER.

Copies of this patent may be obtained for five egents each, by addressing the Commissioner of Patents Washington, I). G. 

